High-power forward Raman amplifiers employing low-pressure gases in light guides. II: Experiments

Mick Shaw, Jouni Partanen, Yoshiro Owadano, Ian Ross, Elizabeth Hodgson, Chris Edwards, Fergus O'Neil

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)

Abstract

An experimental study of a high-power forward Raman amplifier pumped by a multibeam KrF laser is presented. The active medium is either CH4 at 3-bar pressure or H2 at 1-bar pressure. As many as 56 pump beams confined in a light guide were combined into a single low-divergence Stokes beam. In CH4 a gain of up to 300 and a power-conversion efficiency of 70% was obtained. The maximum Stokes output energy was 8.4 J. The dependence of gain on pump bandwidth was investigated in H2. A gain of 500 and a conversion efficiency of 65% were obtained. The maximum output energy was 5.0 J.

Original languageEnglish
Pages (from-to)1466 - 1475
Number of pages10
JournalJournal of the Optical Society of America B: Optical Physics
Volume3
Issue number10
DOIs
Publication statusPublished - 1986
MoE publication typeNot Eligible

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